Acoustic performance

The acoustic performance of Trisomet® has been predicted using software developed by the Department of Applied Acoustics, University of Salford, under a research contract funded by the Metal Cladding and Roofing Manufacturers Association (MCRMA). The results in the table are based on an 80mm core.

Frequency (Hz) SRI Values (dB)* Frequency (Hz) SRI Values (dB)*
100 12.1 800 27.2
125 13.6 1000 28.9
160 15.3 1250 30.6
200 16.9 1600 32.5
250 18.5 2000 34.3
315 20.2 2500 36
400 21.9 3150 35.9
500 23.6 4000 33.8
630 25.4 5000 31.2

* The predicted sound reduction index values should only be used to provide guidance for preliminary design and/or appraisal of cladding systems.Weighted S.R.I RW = 28.5 dB